Convert 50 mg L-1 to g/L and ppm?

Question

please help

Answer 1

To convert 50 mg/L into g/L this is the simple step:

mg = 10exp-3 g, so

50 mg/L = 50mg/L x 10exp-3 g/mg = 5.10exp-2 g/L

how to convert 50 mg/L into ppm

parts per million is equivalent to milligram per liter (mg/L) or 1 milligram per kilogram (mg/Kg), according to this definition 50 mg/L is equivalent 50 ppm.

Answer 2

50 mg / L x (1 g / 1000 mg) = 0.050 g/L

************************

ppm is parts per million parts with units of mass per mass...ie... g / 1,000,000 g....so we need to start by converting L to mass...

if we assume the 1 L has a mass of 1 kg, then....

0.050 g / L = 0.050 g / kg = 0.050 g / 1000 g = 50 g / 1,000,000 g.  = 50 ppm